Melt butter. Coat bottom and sides of pan with 2 tablespoons of the melted butter. Sprinkle with 2 tablespoons of the nuts. Add remaining nuts, brown sugar and water to butter. Heat to boiling, stirring occasionally. Remove rolls from can in rolled sections, do not unroll. Cut each section in four slices. Arrange in pan, separate each pinwheel slightly to allow sauce to penetrate. Spoon the caramel sauce over dough. Bake at 375° for 25 to 30 minutes or until golden brown. Cool 3 minutes. Turn onto serving platter.